Connect your AI agent to API Ninjas

Access our entire API catalog with a single MCP endpoint. Bring your own API key — works with Claude, Cursor, ChatGPT, GitHub Copilot, Gemini, and a dozen other clients.

EndpointStreamable HTTP transport

AuthenticationFind your key on the profile page — also accepted as Authorization: Bearer or ?apikey= in the URL

Command line

Claude Code

Official docs

Anthropic's official CLI for Claude. Native support for remote streamable-http servers and per-request headers.

Add via the CLI

claude mcp add --transport http apininjas https://mcp.api-ninjas.com/mcp \
  --header "X-Api-Key: YOUR_API_NINJAS_KEY"

Or edit .mcp.json directly (project-scoped)

{
  "mcpServers": {
    "apininjas": {
      "type": "http",
      "url": "https://mcp.api-ninjas.com/mcp",
      "headers": { "X-Api-Key": "YOUR_API_NINJAS_KEY" }
    }
  }
}

Troubleshooting

429 Too Many Requests

Your key has used its monthly quota (3,000 calls on the Free plan). Every plan, including Free, can connect to the MCP server; upgrade your plan for a larger quota and premium-only fields.

401 Unauthorized

Your key isn't reaching the server, or it isn't valid. The server accepts it three ways: an X-Api-Key header, an Authorization: Bearer header, or ?apikey=YOUR_KEY appended to the server URL (for clients with no header field). Confirm the value matches the key on your profile page.

Tool count looks short

A successful connection lists roughly 170 tools (one per API Ninjas endpoint). Some clients filter or paginate — check your client's tool browser settings.

Client doesn't support remote MCP

Wrap our endpoint with the mcp-remote bridge to convert it into a stdio process: npx -y mcp-remote https://mcp.api-ninjas.com/mcp --header "X-Api-Key:YOUR_API_NINJAS_KEY"

Hitting rate limits

Each tool call counts against your normal API Ninjas quota. Upgrade your plan for higher rate limits, more requests per month, and access to premium-only fields. Still stuck? Contact us.